Danny Harvey (Scott Adkins) has spent all of his life fighting - in the playground, on the football pitch and then heading up the West Ham firm the Green Street Elite (GSE). Fourteen years ago, Danny turned his back on football violence, but Danny’s younger brother Joey (Billy Cook), also a skilled fighter, couldn’t turn his back on the GSE. When Joey is killed in an organised fight against a rival firm, Danny is desperate to seek revenge and avenge his brother’s death. Danny returns to his old manor and knows the only way of finding out who killed Joey is to return to his past and get back into the firm.